"Despite numerous concerns over the level of oversupply in a number of locations within Bulgaria - notably the winter ski resort of Bansko and selected coastal resort locations - Bulgaria has supplanted the previously top performing Baltic hotspot at the top of the Knight Frank league," the report declared.

Last year, the highest ranking country was Latvia, which saw property price growth of 56.9%. However, this dropped in 2007 to 10.9%, on concerns about overpricing in the Latvian capital, Riga.